<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" autocomplete="off"
      label-position="left">
      <!-- <div class="title-container">
        <h3 class="title">请登陆</h3>
      </div> -->

      <el-form-item prop="username">
        <span class="svg-container">
          <svg-icon name="user" />
        </span>
        <el-input ref="username" v-model="loginForm.username" name="username" type="text" autocomplete="off"
          placeholder="帐号" />
      </el-form-item>

      <el-form-item prop="password">
        <span class="svg-container">
          <svg-icon name="password" />
        </span>
        <el-input :key="passwordType" ref="password" v-model="loginForm.password" :type="passwordType" placeholder="密码"
          name="password" autocomplete="off" @keyup.enter.native="handleLogin" />
        <span class="show-pwd" @click="showPwd">
          <svg-icon :name="passwordType === 'password' ? 'eye-off' : 'eye-on'" />
        </span>
      </el-form-item>

      <el-button :loading="loading" type="primary" style="width: 100%; margin-bottom: 30px"
        @click.native.prevent="handleLogin">
        登录
      </el-button>
    </el-form>
  </div>
</template>

<script lang="ts">
import { Component, Vue, Watch } from "vue-property-decorator";
import { Route } from "vue-router";
import { Dictionary } from "vue-router/types/router";
import { Form as ElForm, Input } from "element-ui";
import { UserModule } from "@/store/modules/user";
import { isValidUsername } from "@/utils/validate";
import { setCookie, getCookie } from "@/utils/cookies";

@Component({
  name: "Login",
})
export default class extends Vue {
  private validateUsername = (rule: any, value: string, callback: Function) => {
    if (!isValidUsername(value)) {
      callback(new Error("请输入要登录的用户"));
    } else {
      callback();
    }
  };

  private validatePassword = (rule: any, value: string, callback: Function) => {
    if (value.length < 3) {
      callback(new Error("输入的密码不能少于3个字符"));
    } else {
      callback();
    }
  };

  private loginForm = {
    username: "",
    password: "",
  };

  private loginRules = {
    username: [{ validator: this.validateUsername, trigger: "blur" }],
    password: [{ validator: this.validatePassword, trigger: "blur" }],
  };

  private passwordType = "password";
  private loading = false;
  private showDialog = false;
  private redirect?: string;
  private otherQuery: Dictionary<string> = {};

  @Watch("$route", { immediate: true })
  private onRouteChange(route: Route) {
    // TODO: remove the "as Dictionary<string>" hack after v4 release for vue-router
    // See https://github.com/vuejs/vue-router/pull/2050 for details
    const query = route.query as Dictionary<string>;
    if (query) {
      this.redirect = query.redirect;
      this.otherQuery = this.getOtherQuery(query);
    }
  }

  mounted() {
    if (this.loginForm.username === "") {
      (this.$refs.username as Input).focus();
    } else if (this.loginForm.password === "") {
      (this.$refs.password as Input).focus();
    }
    let uname: any = this.$route.query.uname;
    let pwd: any = this.$route.query.pwd;
    if (uname && pwd) {
      this.loginForm.username = uname;
      this.loginForm.password = pwd;
      setCookie('sidebar_status', 'closed');
      this.handleLogin();

    }
  }

  private showPwd() {
    if (this.passwordType === "password") {
      this.passwordType = "";
    } else {
      this.passwordType = "password";
    }
    this.$nextTick(() => {
      (this.$refs.password as Input).focus();
    });
  }

  private handleLogin() {
    (this.$refs.loginForm as ElForm).validate(async (valid: boolean) => {
      if (valid) {
        this.loading = true;
        try {
          await UserModule.Login(this.loginForm);
          this.$router.push({
            path: this.redirect || "/",
            query: this.otherQuery,
          });
        } finally {
          setTimeout(() => {
            this.loading = false;
          }, 0.5 * 1000);
        }
        // Just to simulate the time of the request
      } else {
        return false;
      }
    });
  }

  private getOtherQuery(query: Dictionary<string>) {
    return Object.keys(query).reduce((acc, cur) => {
      if (!(cur == "redirect" || cur == 'uname' || cur == 'pwd')) {
        acc[cur] = query[cur];
      }
      return acc;
    }, {} as Dictionary<string>);
  }
}
</script>

<style lang="scss">
// References: https://www.zhangxinxu.com/wordpress/2018/01/css-caret-color-first-line/
@supports (-webkit-mask: none) and (not (cater-color: $loginCursorColor)) {
  .login-container .el-input {
    input {
      color: $loginCursorColor;
    }

    input::first-line {
      color: $lightGray;
    }
  }
}

.login-container {
  background-image: url("~@/assets/img/logon_bg.jpg");
  background-position: center 0;
  background-repeat: no-repeat;
  background-attachment: fixed;
  background-size: cover;
  -webkit-background-size: cover;
  -o-background-size: cover;
  -moz-background-size: cover;
  -ms-background-size: cover;

  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      height: 47px;
      background: transparent;
      border: 0px;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $lightGray;
      caret-color: $loginCursorColor;
      -webkit-appearance: none;

      // &:-webkit-autofill {
      //   box-shadow: 0 0 0px 1000px $loginBg inset !important;
      //   -webkit-text-fill-color: #fff !important;
      // }
      &:-webkit-autofill,
      &:-webkit-autofill:hover,
      &:-webkit-autofill:focus,
      &:-webkit-autofill:active {
        -webkit-transition-delay: 99999s;
        -webkit-transition: color 99999s ease-out,
          background-color 99999s ease-out;
      }
    }
  }

  .el-form-item,
  .el-button {
    margin-left: 85px;
  }

  .el-form-item,
  .el-button--primary {
    border: 1px solid rgba(255, 255, 255, 0.1);
    // background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    width: 70% !important;
    // color: #454545;
  }
}
</style>

<style lang="scss" scoped>
.login-container {
  height: 100%;
  width: 100%;
  overflow: hidden;
  background-color: $loginBg;

  .login-form {
    padding-top: 150px;
    position: relative;
    width: 512px;
    height: 485px;
    margin: 0 auto;
    top: 22%;
    left: 15%;
    background-image: url("~@/assets/img/login_p2.png");
    background-repeat: no-repeat;
    background-size: cover;
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $darkGray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $lightGray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $darkGray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
